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  • Letter

Strong suppression of electron convection in Dirac and Weyl semimetals

P. O. Sukhachov1,*, E. V. Gorbar2,3, and I. A. Shovkovy4,5

  • 1Department of Physics, Yale University, New Haven, Connecticut 06520, USA
  • 2Department of Physics, Taras Shevchenko National Kyiv University, Kyiv 03022, Ukraine
  • 3Bogolyubov Institute for Theoretical Physics, Kyiv 03143, Ukraine
  • 4College of Integrative Sciences and Arts, Arizona State University, Mesa, Arizona 85212, USA
  • 5Department of Physics, Arizona State University, Tempe, Arizona 85287, USA

  • *pavlo.sukhachov@yale.edu
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Phys. Rev. B 104, L121113 – Published 20 September, 2021

DOI: https://doi.org/10.1103/PhysRevB.104.L121113

Abstract

It is shown that the convective instability in electron fluids in three- and two-dimensional (3D and 2D) Dirac and Weyl semimetals is strongly inhibited. The major obstacles for electron convection are the effects of the Coulomb forces and the momentum relaxation related to the interaction with impurities and phonons. The effect of the Coulomb forces is less pronounced in 2D materials, such as graphene. However, momentum relaxation still noticeably inhibits convection, making it very difficult to achieve in practice.

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Phys. Rev. B 104, L121113– Published 20 September, 2021
  • Received 6 April 2021
  • Revised 2 June 2021
  • Accepted 13 September 2021
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